Improvement in pumps



dition nes l patou ditto.

Joni. n.

BASSET'I, GINCIN'NATLOHIO.

Letters yPatent N c. 110,622, dated January 3, 1871.

.IMPROVEMENT IN PUMPS.

I, JOEL Re .'AssErT, of Cincinnati, Hamilton county, Ohio, have invented an Improved Pump,

of which the' following is aspcciication. A

Nature and Objects of the Invention.

' 'lhis invention relates to that olassof devices commonly known as donbleracting lift and force-pumps; and

The improvement consists, principally, in an arrangement at the extremities of the barrel or cylinder of the pump, of water-passages that permit the valves vto be located as near as possible to said barrel, thereby dispensing with long'ehannels in which air collects, and thus impairs the efficiency ofthe appa.-v ratus.

Description of the Accompanying Drawing.

Figure l is a vertical section of my improved pump, the section being taken in the plane of the suction and discharge-pi pes at the line 4- 4.

Figure 2 is a vertical section of the pump in the plane of the valves, or at right angles to the previous view, at the line 3 3.

Figure 3 is avertical section of the lower portion of the pump, taken at the line 1 l.

Figure 4 is a horizontal section at the line 2 2.v

Figure 5 is a perspective view of the diaphragm, which is interposed between the pump-barrel and airvessel.

Figure 6 is a perspective view of the lower end of the pump-barrel and its accompanying partitions and shell.

General Description. y

vided into two chambers, C O', by the wall b, the' first of s aid chambers, C, communicating with the suction side of the pump, and the latter one, C', with the delivery-side of the same.

The upper side of the suction-chamber Cis provided with two apertures, D D', of which the latter is covered by a suction-valve, E; and the other cham- 1 ber, C', is also provided with two apertures, F F', onev of which, F', is furnished with a discharge-valve, G. The lower end of the pum p-barrel H and its concentric shell, I, are tted within the circular recess a of the base, a gasket, J, being interposed between said base' and the barrel and shell, for the purpose of producing an air-tight joint. The barrel H and its shell I are east in one piece, and are ainited by four vertical and parallel partitions, L L M M', of which the ones L' and M extend from the top of the pump-barrel to the base A, while the two other partitions, L M', stop short of saidbase, 'so as to leave ports, N N', that communicatel respectively with the discharge and suction-sides of the pump.

The suction-chamber O is segmental in shape, and

is formed by the partitions M M' and a portion of the shell I.

The discharge-chamber P is of asimilar shape, and i is surrounded by the partitions L L' 'and another portion of shell I.

Screwed intothe base A is the fixed portion R of the suction-pipe, which extends up almost to the top of the vacuum-chamber O, so as to keep the lower portion of said chamber constantly full of water, thereby preventing the valvesbeoming dry, and obviating the necessity of priming the pump.

The detachable portion R' of the suction-pipe is 4made of any desired length to suit the location ofthe pump.

The upper ends of barrel H and shell I, which are of uniform length, are united by a plate, S, as shown in fig. 2, and this plate extends across from the partition L to L', and also from the partition M to the one M.

The plate S is not a separate piece, but is cast with the barrel and shell, and it is provided with two apertures or ports, T T', of which the one Tis covered with a valve, U, while the other one, T', is fa blind By casting this plate with two apertures init, the best one can beselected for use lin caseA one of them should be defective.

Interposed between the upper ends of the members H I and the hernispherical air-vessel V is a horivzontal diaphragm, W, having a valve-chest, X, and a central boss, w, which is lined with asoft-metal bush ing, Y, that is traversed by the rod 1 of piston Q.

The top of chest X has an opening, yfwhich is covered by a discl'iarge-valve, x, and the upper suction-valve U plays within said chest, as shown in liv. 2. c

uA gasket, u, is placed between the diaphragm W andthe upper end of the pump, and a part 'of this gasket is made to serve as the flexible portion 'of the- .with the bushing Y of said boss, forms an air-tight passage for the piston-rod, and thus permits of a stungbox being dispensed with.

The extended bearing aordedby the sleeve o and bushing Y serves to conne the piston-rod to a vertical path, and obviates theV necessity of the complicated arrangement of guides, cross-heads, and links which are generally employed for that purpose.

The bottom portion of dome V has a recess, fe', for the reception of the shell I, gasket u, and diaphragm W, and, by the application of bolts B', which are screwed into base A, the various parts of the pump are mmovably secured in their proper positions.

'i is a plug, which, when unscrewed from the shell, permits sand, chips, dirt, and other sediment to be removed from the suction-chamber O. Y

may be placed in the suction-chamber, so as to prevent obstructions of any kind being drawn into the interior passages, channels, or valves of the apparatus.

The extreme lower end of the pump-barrel may be increased in diameter, so as to afford a greater area to the openings -D' and F, but in this case the piston' Q should be made somewhat longer, so as to reach the bottom of the barrel without uncovering or exposing the aforesaid enlargement.

Operation.

After the piston has been operated so as to form a vacuum in the chamber 0, water will ow up `the pipe R into'said chamber, and from thence through port N' to the passage formed between the partitions L M,vbarrel H, and shell I.

If the piston Q should now be depressed, the upper suction-valve U will o pen, and water will ow in` to the upper end of pump-barrel H through opening h, as seen in iig. 2.

During the descent of the piston, the valves E and a; are both closed, and the one G is opened so as to permit the expulsion of air from the lower end of the pump-barrel.

When the piston has reached the termination of its downward stroke, and the barrel H has been tilled with water, the stroke is reversed, the valve U closed, the one z opened, and the water is expelled from the pump through said valve a; and opening Z into the chamber P, from which it is discharged byv pipe p.

As soon as the piston commences itsl ascent,fthe lower discharge-valve G closes, the suction-valve E opens, and water flows into the lower end of pump through poit N and openings D- D in the duct B, as indicated by arrows in iig. 4.

The lower part of the pump having been thus filled by the ascent of the piston, the motion of the latter is reversed, and its descent closes valve E, and causes the water to be expelled through openings F F and portN into chamber P, from which it escapes up the discharge-pipep, and the continuousascentand descent of the piston insures the complete filling and emptying of. the pump at every stroke.

V After the pump has once been filled, water will always remain in itrou a level with the upper end of pipe R, thereby completely surrounding the valves with water, and obviating the necessity of priming- 'the pump every time it is desired to use it.

It will be seen that the suction and discharge-passages enter and leave the barrel at its extreme ends, and

that the valves are located as near the barrel as it is possible to. have them, and, by this arrangement, confined chambers in the ends of the barrel and long water-passages are avoided, which are well known to be a source of dilculty in the operation of any pump, as air will collect or pocket in, them, and thereby prevent the complete filling and emptying of the ap-v paratus.

Claims.

l. The combination, substantially as described, of the base A a', duct B b G C with its opening D D' F F', and valves E G, pump-barrel H h, shell I, partitions L L M vM', ports N N vacuum-chamber O, suction-pipe R, discharge-chamber P, pipe p, piston Q q, plate S, opening T, valve U, air-vessel Vfv, diaphragm Ww Z, chest X, valve x, and retaining de vices B', for the purpose set forth.

2. In combination with the 'pump-barrel H, airvessel V, and diaphragm W w, the sleeve 'u and the bushing Y, for the object stated.

In testimony of which invention I hereunto set my hand.

J. R. BASSETT.

Witnesses:

Gmo. H. KNIGHT, JAMES H. LAYMAN. 

